CA1114663A - Procede et installation de traitement en continu d'une matiere cellulosique - Google Patents

Procede et installation de traitement en continu d'une matiere cellulosique

Info

Publication number: CA1114663A
Authority: CA; Canada
Prior art keywords: zone; chips; treatment; downstream; compression
Prior art date: 1978-02-27
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired

Application number

CA322,329A

Other languages

English (en)

French (fr)

Inventor

Pierre Berger

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Creusot Loire SA

Original Assignee

Creusot Loire SA

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1978-02-27

Filing date

1979-02-26

Publication date

1981-12-22

1979-02-26 Application filed by Creusot Loire SA filed Critical Creusot Loire SA

1981-12-22 Application granted granted Critical

1981-12-22 Publication of CA1114663A publication Critical patent/CA1114663A/fr

Status Expired legal-status Critical Current

Links

239000000463 material Substances 0.000 title claims abstract description 97
238000000034 method Methods 0.000 title claims abstract description 28
239000003153 chemical reaction reagent Substances 0.000 claims abstract description 45
238000011144 upstream manufacturing Methods 0.000 claims abstract description 27
239000000835 fiber Substances 0.000 claims abstract description 25
230000006835 compression Effects 0.000 claims abstract description 23
238000007906 compression Methods 0.000 claims abstract description 23
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
238000005056 compaction Methods 0.000 claims abstract description 9
238000012549 training Methods 0.000 claims abstract description 6
230000007423 decrease Effects 0.000 claims abstract description 4
230000001737 promoting effect Effects 0.000 claims abstract description 3
238000005470 impregnation Methods 0.000 claims description 18
238000009434 installation Methods 0.000 claims description 16
239000011295 pitch Substances 0.000 claims description 15
230000000694 effects Effects 0.000 claims description 13
230000002441 reversible effect Effects 0.000 claims description 13
239000007788 liquid Substances 0.000 claims description 10
238000005194 fractionation Methods 0.000 claims description 3
238000010008 shearing Methods 0.000 claims description 3
230000008030 elimination Effects 0.000 claims description 2
238000003379 elimination reaction Methods 0.000 claims description 2
238000012856 packing Methods 0.000 claims description 2
230000000750 progressive effect Effects 0.000 claims description 2
230000009977 dual effect Effects 0.000 claims 1
239000000126 substance Substances 0.000 description 12
229920005610 lignin Polymers 0.000 description 11
239000002023 wood Substances 0.000 description 11
238000009825 accumulation Methods 0.000 description 7
238000002203 pretreatment Methods 0.000 description 6
CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 5
238000010411 cooking Methods 0.000 description 5
238000004519 manufacturing process Methods 0.000 description 5
229920001131 Pulp (paper) Polymers 0.000 description 4
238000000265 homogenisation Methods 0.000 description 3
235000015927 pasta Nutrition 0.000 description 3
238000012545 processing Methods 0.000 description 3
239000000047 product Substances 0.000 description 3
230000000930 thermomechanical effect Effects 0.000 description 3
238000013519 translation Methods 0.000 description 3
230000015572 biosynthetic process Effects 0.000 description 2
230000003247 decreasing effect Effects 0.000 description 2
230000006866 deterioration Effects 0.000 description 2
238000011049 filling Methods 0.000 description 2
238000013467 fragmentation Methods 0.000 description 2
238000006062 fragmentation reaction Methods 0.000 description 2
238000002156 mixing Methods 0.000 description 2
238000002360 preparation method Methods 0.000 description 2
238000007670 refining Methods 0.000 description 2
238000005096 rolling process Methods 0.000 description 2
238000010025 steaming Methods 0.000 description 2
230000001360 synchronised effect Effects 0.000 description 2
241000238876 Acari Species 0.000 description 1
LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
229920003043 Cellulose fiber Polymers 0.000 description 1
241000196324 Embryophyta Species 0.000 description 1
241000283074 Equus asinus Species 0.000 description 1
235000008694 Humulus lupulus Nutrition 0.000 description 1
244000025221 Humulus lupulus Species 0.000 description 1
101100273916 Schizosaccharomyces pombe (strain 972 / ATCC 24843) wip1 gene Proteins 0.000 description 1
LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
238000013459 approach Methods 0.000 description 1
ZETCGWYACBNPIH-UHFFFAOYSA-N azane;sulfurous acid Chemical compound N.OS(O)=O ZETCGWYACBNPIH-UHFFFAOYSA-N 0.000 description 1
150000001768 cations Chemical class 0.000 description 1
229920002678 cellulose Polymers 0.000 description 1
239000001913 cellulose Substances 0.000 description 1
238000006243 chemical reaction Methods 0.000 description 1
230000002301 combined effect Effects 0.000 description 1
239000000470 constituent Substances 0.000 description 1
238000010276 construction Methods 0.000 description 1
239000000109 continuous material Substances 0.000 description 1
230000002542 deteriorative effect Effects 0.000 description 1
238000007865 diluting Methods 0.000 description 1
238000010790 dilution Methods 0.000 description 1
239000012895 dilution Substances 0.000 description 1
238000004090 dissolution Methods 0.000 description 1
238000001035 drying Methods 0.000 description 1
238000000605 extraction Methods 0.000 description 1
230000002349 favourable effect Effects 0.000 description 1
239000002657 fibrous material Substances 0.000 description 1
239000012467 final product Substances 0.000 description 1
PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
239000010931 gold Substances 0.000 description 1
229910052737 gold Inorganic materials 0.000 description 1
238000009413 insulation Methods 0.000 description 1
238000002955 isolation Methods 0.000 description 1
238000004898 kneading Methods 0.000 description 1
238000012423 maintenance Methods 0.000 description 1
230000007935 neutral effect Effects 0.000 description 1
230000035515 penetration Effects 0.000 description 1
238000005086 pumping Methods 0.000 description 1
239000002994 raw material Substances 0.000 description 1
230000002787 reinforcement Effects 0.000 description 1
238000007789 sealing Methods 0.000 description 1
230000009182 swimming Effects 0.000 description 1
238000012360 testing method Methods 0.000 description 1

Classifications

- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B9/00—Presses specially adapted for particular purposes
- B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
- B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/14—Disintegrating in mills
- D21B1/16—Disintegrating in mills in the presence of chemical agents
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S162/00—Paper making and fiber liberation
- Y10S162/02—Chip soaking

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Life Sciences & Earth Sciences (AREA)
Wood Science & Technology (AREA)
Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
General Chemical & Material Sciences (AREA)
Paper (AREA)
Disintegrating Or Milling (AREA)
Joining Of Building Structures In Genera (AREA)
Revetment (AREA)
Apparatus Associated With Microorganisms And Enzymes (AREA)

CA322,329A 1978-02-27 1979-02-26 Procede et installation de traitement en continu d'une matiere cellulosique Expired CA1114663A (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
FR7805495A FR2418295A1 (fr)	1978-02-27	1978-02-27	Procede et installation de traitement en continu d'une matiere cellulosique
FR7805495		1978-02-27

Publications (1)

Publication Number	Publication Date
CA1114663A true CA1114663A (fr)	1981-12-22

Family

ID=9205077

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CA322,329A Expired CA1114663A (fr)	1978-02-27	1979-02-26	Procede et installation de traitement en continu d'une matiere cellulosique

Country Status (16)

Country	Link
US (1)	US4214947A (da)
JP (1)	JPS54125702A (da)
AT (1)	AT369055B (da)
AU (1)	AU532183B2 (da)
BR (1)	BR7901090A (da)
CA (1)	CA1114663A (da)
DE (1)	DE2905443C2 (da)
DK (1)	DK155126C (da)
ES (2)	ES477297A1 (da)
FI (1)	FI67887C (da)
FR (1)	FR2418295A1 (da)
IT (1)	IT1119269B (da)
NO (1)	NO150050C (da)
NZ (1)	NZ189614A (da)
SE (1)	SE7901549L (da)
SU (1)	SU856392A3 (da)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2906528A1 (de) *	1979-02-20	1980-09-04	Sueddeutsche Zucker Ag	Verfahren zur herstellung von ruebenschnitzeln hohen trockensubstanzgehaltes
US4316748A (en) *	1980-03-18	1982-02-23	New York University	Process for the acid hydrolysis of waste cellulose to glucose
US4368079A (en) *	1980-03-18	1983-01-11	New York University	Apparatus for chemical conversion of materials and particularly the conversion of cellulose waste to glucose
US4363671A (en) *	1980-03-18	1982-12-14	New York University	Apparatus for chemical conversion of materials
US4316747A (en) *	1980-03-18	1982-02-23	New York University	Process for the chemical conversion of cellulose waste to glucose
SE440247B (sv) *	1983-11-30	1985-07-22	Folke Eriksson	Apparat for behandling av cellulosamassa med en koncentration ovanfor flytbarhetsgrensen
SE447737B (sv) *	1983-11-30	1986-12-08	Frotator Ab	Apparat for behandling av cellulosammassa med en konsistens ovanfor flytbarhetsgrensen med matningsbefremjande organ mellan bearbetande skivor
SE447738B (sv) *	1983-11-30	1986-12-08	Frotator Ab	Apparat for behandling av cellulosammassa med en konsistens over flytbarhetsgrensen med transportskruv fore en bearbetningszon
US4632729A (en) *	1984-05-01	1986-12-30	Laakso Oliver A	Chip presteaming and air washing
SE451441B (sv) *	1984-05-16	1987-10-12	Jochnick & Norrman Press Ab	Maskin for bearbetning av en elastomerprodukt
US4897155A (en) *	1987-05-27	1990-01-30	Kamyr, Inc.	Method for producing low fines content pulp by subjecting cellulosic chips to low frequency compression-relaxation cycles
FR2618811B1 (fr) *	1987-07-31	1990-06-22	Centre Tech Ind Papier	Procede de fabrication de pates chimicomecaniques ou chimicothermo-mecaniques blanchies
US4997488A (en) *	1988-02-05	1991-03-05	The United States Of America As Represented By The Secretary Of Agriculture	Combined physical and chemical treatment to improve lignocellulose digestibility
AU620378B2 (en) *	1988-02-05	1992-02-20	Beghin-Say	Process for removing the fibre from a lignocellulose material
FR2626905A1 (fr) *	1988-02-05	1989-08-11	Beghin Say Sa	Procede de defibrage d'une matiere lignocellulosique
US4842877A (en) *	1988-04-05	1989-06-27	Xylan, Inc.	Delignification of non-woody biomass
US5023097A (en) *	1988-04-05	1991-06-11	Xylan, Inc.	Delignification of non-woody biomass
AU5280490A (en) *	1989-03-10	1990-10-09	Wenger Manufacturing, Inc.	Method and apparatus for extrusion processing of wood products and fibrous materials
JP2594526B2 (ja) *	1992-12-22	1997-03-26	カゴメ株式会社	搾汁用二軸異方向回転型エクストルーダー
AT398991B (de) *	1993-05-24	1995-02-27	Andritz Patentverwaltung	Mischer, insbesondere hochleistungsmischer zur verfeinerung von vorzerkleinerten stoffen
US5503788A (en) *	1994-07-12	1996-04-02	Lazareck; Jack	Automobile shredder residue-synthetic plastic material composite, and method for preparing the same
FR2723598B1 (fr)	1994-08-10	1996-10-18	Sorgho Agro Ind Et Papetier Sa	Procede de demoellage de plantes a moelle, en particulier sorgho, en vue d'obtenir des fibres de qualite papetiere
US5762756A (en) *	1994-11-21	1998-06-09	The Black Clawson Company	Methods and apparatus for pulping and deinking
US5705216A (en) *	1995-08-11	1998-01-06	Tyson; George J.	Production of hydrophobic fibers
FR2741638B1 (fr) *	1995-11-29	1998-02-20	Clextral	Procede et installation de preparation en continu d'une pate de cellulose
US6550376B2 (en) *	2001-01-23	2003-04-22	Robert Boyd Johnston	Twin screw press with interrupted flights
SE0100259L (sv) *	2001-01-26	2001-12-17	Kvaerner Pulping Tech	Fördelningsanordning för utmatning av cellulosamassa i form av en massabana
US20060201641A1 (en) *	2001-08-07	2006-09-14	Bioregional Minimills (Uk) Limited	Methods for producing pulp and treating black liquor
US7600707B2 (en) *	2005-06-21	2009-10-13	Purevision Technology, Inc.	Apparatus for the separation and treatment of solid biomass
US7815741B2 (en)	2006-11-03	2010-10-19	Olson David A	Reactor pump for catalyzed hydrolytic splitting of cellulose
US7815876B2 (en)	2006-11-03	2010-10-19	Olson David A	Reactor pump for catalyzed hydrolytic splitting of cellulose
DE202012013402U1 (de) *	2012-05-23	2016-10-27	Thilo Lehmann	Extruder für Substrate aus organischen Rest- und Rohstoffen
WO2014092992A1 (en) *	2012-12-14	2014-06-19	Purevision Technology, Llc	Methods for producing sugars from biomass
WO2014143753A1 (en)	2013-03-15	2014-09-18	Sweetwater Energy, Inc.	Carbon purification of concentrated sugar streams derived from pretreated biomass
US20150224428A1 (en) *	2013-12-05	2015-08-13	Greenfield Specialty Alcohols Inc.	Backpressure control for solid/fluid separation apparatus
US9833961B2 (en) *	2014-04-02	2017-12-05	Orion Enterprise International LLC	Extracting-squeezing-compressing equipment used for municipal solid waste mixture
CN107208120B (zh)	2014-12-09	2021-11-23	斯威特沃特能源公司	快速预处理
CA3022837A1 (en)	2016-05-02	2017-11-09	Greenfield Specialty Alcohols Inc.	Filter for extruder press
US11821047B2 (en)	2017-02-16	2023-11-21	Apalta Patent OÜ	High pressure zone formation for pretreatment
WO2020086900A1 (en) *	2018-10-24	2020-04-30	Wagler Timothy	Processes, methods, and systems for chemo-mechanical cellular explosion and solid and liquid products made by the same
US11692000B2 (en)	2019-12-22	2023-07-04	Apalta Patents OÜ	Methods of making specialized lignin and lignin products from biomass
GB202000263D0 (en) *	2020-01-09	2020-02-26	Zelfo Tech Gmbh	Apparatus and method for dry or semi dry forming fibres

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US1419847A (en) *		1922-06-13		Jkaohiste eob eeessing i lbjik
DE592523C (de) *	1930-05-28	1934-02-08	Maschb Werkstaette Niefern G M	Stoffmuehle zum Nachbehandeln von Aufloeserstoffen und zum Zerkleinern von Holzstoff, Zellstoff u. dgl.
US2943012A (en) *	1955-12-01	1960-06-28	Int Basic Economy Corp	Method and apparatus for fiberizing fibrous material
GB808854A (en) *	1956-03-21	1959-02-11	Walter Philip Williams	Pulping and refining
US3064908A (en) *	1957-07-02	1962-11-20	Color & Sjogren Ab	Apparatus for mixing and working material
US3085623A (en) *	1960-09-15	1963-04-16	Bauer Bros Co	Impregnator
SE333095B (da) *	1967-04-21	1971-03-01	Calor & Sjoegren Ab
FR2319737A1 (fr) *	1975-07-31	1977-02-25	Creusot Loire	Procede et machine de fabrication de pate a papier

1978
- 1978-02-27 FR FR7805495A patent/FR2418295A1/fr active Granted
1979
- 1979-01-31 NO NO790314A patent/NO150050C/no unknown
- 1979-01-31 DK DK041679A patent/DK155126C/da not_active IP Right Cessation
- 1979-01-31 ES ES477297A patent/ES477297A1/es not_active Expired
- 1979-02-06 US US06/009,839 patent/US4214947A/en not_active Expired - Lifetime
- 1979-02-08 AU AU44061/79A patent/AU532183B2/en not_active Ceased
- 1979-02-08 IT IT67277/79A patent/IT1119269B/it active
- 1979-02-09 NZ NZ189614A patent/NZ189614A/xx unknown
- 1979-02-13 DE DE2905443A patent/DE2905443C2/de not_active Expired
- 1979-02-15 SU SU792732196A patent/SU856392A3/ru active
- 1979-02-21 SE SE7901549A patent/SE7901549L/xx unknown
- 1979-02-21 BR BR7901090A patent/BR7901090A/pt unknown
- 1979-02-21 FI FI790590A patent/FI67887C/fi not_active IP Right Cessation
- 1979-02-22 AT AT0137279A patent/AT369055B/de not_active IP Right Cessation
- 1979-02-26 CA CA322,329A patent/CA1114663A/fr not_active Expired
- 1979-02-26 JP JP2178179A patent/JPS54125702A/ja active Pending
- 1979-06-05 ES ES481284A patent/ES481284A1/es not_active Expired

Also Published As

Publication number	Publication date
FI67887B (fi)	1985-02-28
DK41679A (da)	1979-08-28
FR2418295A1 (fr)	1979-09-21
DK155126B (da)	1989-02-13
NO150050C (no)	1984-08-08
NO150050B (no)	1984-04-30
NZ189614A (en)	1982-09-14
JPS54125702A (en)	1979-09-29
NO790314L (no)	1979-08-28
FR2418295B1 (da)	1982-11-19
ATA137279A (de)	1982-04-15
AT369055B (de)	1982-12-10
AU4406179A (en)	1979-09-06
SE7901549L (sv)	1979-08-28
BR7901090A (pt)	1979-09-11
AU532183B2 (en)	1983-09-22
DE2905443A1 (de)	1979-09-06
DK155126C (da)	1989-07-03
SU856392A3 (ru)	1981-08-15
FI67887C (fi)	1985-06-10
ES477297A1 (es)	1979-11-16
ES481284A1 (es)	1980-01-16
FI790590A7 (fi)	1979-08-28
IT7967277A0 (it)	1979-02-08
US4214947A (en)	1980-07-29
DE2905443C2 (de)	1982-06-24
IT1119269B (it)	1986-03-10

Legal Events

Date	Code	Title	Description
1998-12-22	MKEX	Expiry

Publication	Publication Date	Title
CA1055755A (fr)	1979-06-05	Procede et dispositif pour la fabrication de pate a papier
US4214947A (en)	1980-07-29	Process for the continuous impregnation of a cellulosic material
EP0200614B1 (fr)	1988-06-22	Procédé et dispositif d'extraction de graisse d'une matière animale
CA1331075C (fr)	1994-08-02	Procede pour la fabrication d'une pate a papier a usage fiduciaire
FR2575198A1 (fr)	1986-06-27	Procede de fabrication de pate de cellulose
FR2549109A1 (fr)	1985-01-18	Dispositif pour la production de pate mecanique
EP0276608B1 (fr)	1991-03-27	Procédé pour le traitement à l'ozone d'une pâte cellulosique
CA1112494A (fr)	1981-11-17	Procede et machine de fabrication de pate a papier
CA1131484A (fr)	1982-09-14	Procedes de preparation d'une pate a papier et installation perfectionnee pour la mise en oeuvre du procede
CA1193405A (fr)	1985-09-17	Procede de fabrication d'une pate de fibres cellulosique pour utilisation non papetiere
FR2544757A1 (fr)	1984-10-26	Procede et appareil de digestion pour la production de pulpe de haute qualite
FR2476163A1 (fr)	1981-08-21	Procede de raffinage d'un materiau contenant de la ligno-cellulose pour fabriquer de la pate a papier
EP0698681A1 (fr)	1996-02-28	Procédé de démoellage de plantes à moelle, en particulier sorgho
FR2486556A1 (fr)	1982-01-15	Procede de fabrication de pate de bois rape provenant de matieres lignocellulosiques
FR2626905A1 (fr)	1989-08-11	Procede de defibrage d'une matiere lignocellulosique
FR2764614A1 (fr)	1998-12-18	Procede et installation de preparation en continu d'une pate a papier a partir de fibres textiles lignocellulosiques
FR3015529A1 (fr)	2015-06-26	Procede de preparation de pate a papier
FR2465026A1 (fr)	1981-03-20	Procede pour reduire la teneur en resine pendant la preparation de pates de cellulose provenant de matieres lignocellulosiques et appareil pour sa mise en oeuvre
FR2650604A1 (fr)	1991-02-08	Procede et equipement pour le pretraitement de matiere cellulosique brute
FR2488627A1 (fr)	1982-02-19	Appareil et procede pour separer differentes qualites de papier contenues dans de vieux papiers melanges, et, en particulier, dans des cartons ondules
FR2492424A1 (fr)	1982-04-23	Papier support d'impregnation de resine fait a partir de pates de bois produites par les processus alcalins de fabrication de pates
BE354232A (da)
CA2335665A1 (fr)	2001-08-10	Procede et installation de fabrication de boulettes de fibres de bois
FR2467258A1 (fr)	1981-04-17	Procede et appareil a rouleaux, pour le raffinage de pulpes fibreuses
CH295086A (fr)	1953-12-15	Procédé mécano-chimique pour la fabrication de la pâte à papier.